[Code of Federal Regulations] [Title 14, Volume 1] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR23.53] [Page 189] TITLE 14--AERONAUTICS AND SPACE CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 23_AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES--Table of Contents Subpart B_Flight Sec. 23.53 Takeoff performance. (a) For normal, utility, and acrobatic category airplanes, the takeoff distance must be determined in accordance with paragraph (b) of this section, using speeds determined in accordance with Sec. 23.51 (a) and (b). (b) For normal, utility, and acrobatic category airplanes, the distance required to takeoff and climb to a height of 50 feet above the takeoff surface must be determined for each weight, altitude, and temperature within the operational limits established for takeoff with-- (1) Takeoff power on each engine; (2) Wing flaps in the takeoff position(s); and (3) Landing gear extended. (c) For commuter category airplanes, takeoff performance, as required by Sec. Sec. 23.55 through 23.59, must be determined with the operating engine(s) within approved operating limitations. [Doc. No. 27807, 61 FR 5185, Feb. 9, 1996]